American audio VX User Manual
Professional Power Ampliers
AMERICAN AUDIO®
6122 S. Eastern Ave
Los Angeles Ca. 90040
6/09
VX Series
User Instructions
This symbol is intended to alert the user to the presence of non insulated "dangerous voltage" within the product's enclosure that may be of sufcient magnitude to
constitute a risk of electric shock to persons.
This symbol is intended to alert the user of the presence of important operating and maintenance (servicing) instructions in the literature accompanying the product.
CAUTION: Risk of the electrical shock - DO NOT OPEN!
CAUTION: To reduce the risk of electrical shock, do not remove cover. No user serviceable parts inside. Refer all servicing to qualied service personnel.
WARNING: To prevent electrical shock or re hazard, do not expose this amplier to rain or moisture. Before using this amplier, read the user manual for further warnings.
Este símbolo tiene el propósito de alertar al usuario de la presencia de “voltaje peligroso“ que no tiene aislamiento dentro de la caja del producto que puede tener
una magnitud suciente como para constituir riesgo de corrientazo.
Este símbolo tiene el propósito de alertar al usuario de la presencia de instrucciones importantes sobre la operación y mantenimiento en la literatura que vienc con
el producto.
PRECAUCIÓN: Riesgo del choque eléctrico - NO SE ABRA
PRECAUCIÓN: Para disminuir el riesgo de choque eléctrico, no quite la cubierta. No hay piezas adentro que el usario puede reparar. Deje todo mantenimiento al los téc-
nicos cualicados.
ADVERTENCIA: Para prevenir choque eléctrico o riesgo de incendios, no deja expuesto a la lluvia o a la humedad este amplicador. Antes de usar este amplicador, lea
mas advertencias en la guia de operacion.
Ce symbole est utilisé pur indiquer à l’utilisateur la présence à l'intérieur de ce produit de tension non-isolée dangereuse pouvant être d'intensité sufsante pour
constituer un risque de choc électrique.
Ce symbole est utilisé pour indiquer à l’utilisateur qu'il trouvera d'importantes instructions importantes sur l'utilisation et l'entretien de l'appareil dans la littérature
accompagnant le produit.
ATTENTION: Risque de choc électrique - NE PAS OUVRIR!
ATTENTION: An de réduire le risque de choc électrique, ne pas enlever le couvercle. Il ne se trouve à l’intérieur aucune piéce pouvant être réparée par l'utilisateur. Coner
l'entretien à un personnel qualié.
AVERTISSEMENT: An de prévenir les risque de décharge ou de feu, n’exposez pas cet appareil à la pluie ou à l’humidité. Avant d’utiliser cet amplicateur, lisez les aver-
tissements supplémentaries situés dans le guide.
Dieses Symobl soll den Anwender vor unisollierten gefährlichen Spannungen innerhalb des Gehäuses warnen, die von Ausreichender Stärke sind, um einen elek-
trischen Schlag verursachen zu können.
Dieses Symobl soll den Benutzer auf wichtige Instruktionen in der Bedienungsanleitung aufmerksam machen, die Handhabung und Wartung des Produkts betref-
fen.
VORSICHT: Risiko - Elektrischer Schlag! Nicht öffnen!
VORSICHT: Um ddas Risiko eines elektrischen Schlages zu vermeiden, nicht die Abdeckung enfernen. Es benden sich keine Teile darin, die vom Anwender repariert
werden könnten. Reparaturen nur von qualizierte Fachpersonal durchführen lassen.
ACHTUNG: Um einen elektrischen Schlag oder Feuergefahr zu vermeiden, sollte diesen Gerät nicht dem Regen oder Feuchtigkeit ausgesetz werden. Vor Inbetriebnahme
unbedingt die Bedienungsanleitung lesen.
©American Audio® - www.americanaudio.com - VX Series™ Power Amplifier User Manual Page 2
CAUTION
Do not open -
risk of electric shock
CAUTION: TO REDUCE THE RISK OF ELECTRIC
SHOCK, DO NOT REMOVE THE COVER.
THERE ARE NO USER SERVICEABLE PARTS
INSIDE. REFER ALL SERVICE TO YOUR
AUTHORIZED AMERICAN AUDIO® DEALER.
The lightning flash with an arrow triangular
symbol is intended to alert the user to the
presence of non insulated “dangerous voltage” within the products enclosure, and
may be of sufficient magnitude to constitute a risk of electric shock.
The exclamation point triangular symbol is
intended to alert the user to the presence
of important operating and maintenance
(servicing) instructions in the user manual
accompanying the amplifier.
FOR OPTIMUM PERFORMANCE AND
RELIABILITY DO NOT PRESENT THE
AMPLIFIER WITH A SPEAKER LOAD
OF LESS THAN 2 OHMS OR ANY
COMBINATION OF SPEAKERS THAT
TOGETHER ARE LESS THAN 2 OHMS!
USING ONE SPEAKER, IT MUST BE
RATED AT 4 OR MORE OHMS.
USING TWO SPEAKERS, THEY MUST
RATED EACH AT 4 OR MORE OHMS.
USI NG THR EE SPE AK ERS , T HEY
MUST BE RATED EACH AT 8 OR MORE
OHMS.
P O U R A S S U R E R L A F I A B I L E T E E T
OBTENIT UNE PERFORMANCE OPTIMALE,
NESOUMET TE JAM A IS L’AMPLIFICATEUR
A U NE C HARG E D’I MPEDANCE TOTAL E
INFERIEURE A 2 OHMS, NI AVEC UN H.P. NI
EN COMBINAISON DES H.P.
AV EC UN H . P., I L FAUT UNE CHA RGE
D’IMPEDANCE MINIMUM DE 2 OHMS.
AVEC DEUX H.P., FAUT POUR CHAOUN UNE
CHARGE D’IMPEDANCE MIN I MUM D E 4
OHMS.
AVEC TROIS H.P., FAUT POUR CHAOUN UNE
CHURGE D’IMPEDANCE M I NIMUM D E 8
OHMS.
CONTENTS:
Safety Precautions.......................................................................................................................................................................................4
Introduction...............................................................................................................................................................................................4
Front Panel...................................................................................................................................................................................................5
Rear Panels..................................................................................................................................................................................................6
Inputs...........................................................................................................................................................................................................8
Outputs............................................................................................................................................................................................................8
Speakon Output Connector Assembly.......................................................................................................................................................10
Operating Modes........................................................................................................................................................................................11
Protection Circuitry
Limiter.................................................................................................................................................................................................13
Short Circuit Protection...................................................................................................................................................................13
Thermal Protection..........................................................................................................................................................................13
Amplier Features.......................................................................................................................................................................................13
Amplier Password/Lock Feature...............................................................................................................................................................16
Speaker Setup............................................................................................................................................................................................15
Warranty.................................................................................................................................................................................................16
Specications...............................................................................................................................................................................................17
©American Audio® - www.americanaudio.com - VX Series™ Power Amplifier User Manual Page 3
Important Precautions
Introduction
• To reduce the risk of electrical shock or re, do not expose this
unit rain or moisture.
• Do not spill water or other liquids into or on to your unit.
• Do not attempt to operate this unit if the power cord has been
frayed or broken.
• Do not attempt to remove or break off the ground prong from
the electrical cord. This prong is used to reduce the risk of elec-
trical shock and re in case of an internal short.
• Disconnect main power before making any type of connection
• Do not remove the cover under any conditions. There are no
user serviceable parts inside.
• Never plug this unit in to a dimmer pack.
• Always be sure to mount this unit in an area that will allow
proper ventilation. Allow about 6” (15cm) between this device
and a wall.
• Do not attempt to operate this unit, if it becomes damaged.
• This unit is intended for indoor use only, use of this product out doors voids all warranties.
• During long periods of non-use, disconnect the unit’s main
power.
• Always mount this unit in a safe and stable manner.
• Power cords should be routed so they are not likely to be
walked on, pinched by items placed upon or against them.
• Cleaning -The outside of the unit should be wipe down with a
soft cloth and mild cleaner when needed.
• Heat -The appliance should be situated away from heat sources
such as radiators, heat registers, stoves, or other appliances
(including amplifiers) that produce heat.
• The fixture should be serviced by qualified service personnel
when:
A. The power-supply cord or the plug has been damaged.
B. Objects have fallen on, or liquid has been spilled into the unit.
C. The appliance has been exposed to rain or water.
D. The fixture does not appear to operate normally or exhibits a
marked change in performance.
©American Audio® - www.americanaudio.com - VX Series™ Power Amplifier User Manual Page 4
Introduction: Congratulations and thank you for purchasing
this American Audio® VX Series™ amplifier. This amplifier is a
representation of American Audio’s continuing commitment to
produce the best and highest quality products all at an affordable
price. Please read and understand this manual completely before
attempting to operate your new amplifier. This booklet contains
important information concerning the proper and safe operation of
your new amplifier.
Unpacking: Every VX Series™ amplier has been thoroughly tested and has been shipped in perfect operating condition. Carefully
check the shipping carton for damage that may have occurred
during shipping. If the carton appears to be damaged, carefully
inspect your unit for any damage and be sure all accessories necessary to operate the unit has arrived intact. In the event damage
has been found or parts are missing, please contact our toll free
customer support number for further instructions. Please do not
return the amplier to your dealer without contacting customer
support rst.
Installation: This amplifier is designed to mount into a standard
19” rack. The front panel provides four holes used to screw the
unit into a rack. The unit also provides a way to rear mount the
unit into a rack for added security. Rear mounting the unit is especially recommended for this amplifier if the unit is to mounted into
a mobile rack.
Customer Support: American Audio® provides a toll free custom-
er support line, to provide set up help and to answer any question
should you encounter problems during your set up or initial opera-
tion. You may also visit us on the web at www.americanaudio.com
for any comments or suggestions. For service related issue please
contact American Audio®. Service Hours are Monday through
Friday 9:00 a.m. to 5:00 p.m. Pacific Standard Time.
Voice: (800) 322-6337 E-mail: support@americanaudio.com
Fax: (323) 582-2610
Front Panel
VX1000
VX1500
VX2500
321 4 5
12 11
1. Channel Signal Indicators - These green and yellow LED’s will glow
according to the average signal output.
2. Channel Protect Indicator - The red Protect LED will begin to glow
when the channel goes into protect mode. When the channel goes into
protect mode all output for that channel will turn off. This is to protect any
speakers connected to the channel.
3. Power Switch - This switch is used to control the units main power.
4. LCD Screen - This LCD screen lets you know the current tempera-
tures of both channels. It also will display the different menus and settings when accessed using the Menu and Enter buttons.
5. Channel Limiter Indicator - This red LED will begin to ash when the
respective channel begins to overload (clip). At this point channel one will
begin to distort. Under heavy clipping activity lower the channels gain
control to reduce the risk of damage to your speakers and amplier. This
LED may glow when the unit has been turned off, this is normal.
6. Channel B Gain Control - This rotary knob is used to control the
output signal of channel B. Turning the knob in a clockwise direction will
increase signal output.
10
9 8 7 6
menu settings.
10. Menu Button - This button, when pushed, lets you access the amp
menu. Continue to push to scroll through the menu choices
11. Function Indicators - These indicators detail the operating mode of
the amplier. This blue LED will also function as a power indicator.
12. Channel A Gain Control - This rotary knob is used to control the
output signal of channel A. Turning the knob in a clockwise direction will
increase signal output.
Figure 1
7. Enter Button - This button will allow you to access the different settings located in the menu. Push this button to set your desired setting.
8. Down Button - This button allows you to scroll backwards when in
the menu settings.
9. Up Button - This button allows you to scroll forwards when in the
©American Audio® - www.americanaudio.com - VX Series™ Power Amplifier User Manual Page 5
Rear Panel Control
VX1000 & VX1500
21 212625242322
21. Cooling Fans - Dual high speed cooling fans
22. Channel A XLR Input - Channel two 3-pin XLR balanced input jack. See
page 9 for more details.
23. Channel A XLR Outputs - Channel two 1/4” female jack. Excepts either a
balanced or unbalanced plug. See page 9 for more details.
24. Channel 2 Speakon Output - Optional speaker output connections. Use
pins 1+ and 1- of this 4-pole Speakon connector to connect to your speaker’s
Speakon input jack.
25. Channel 2 Output Jack/5 way Binding Post - Connect to your speaker’s
input jack. Red is positive signal and Black is negative signal.
26. AC Cord - Plug this cable into a standard wall outlet. Check that the voltage
in your area matches the ampliers required voltage.
27. Fuse Holder - This housing stores a 20 amp GMA protective fuse for the
VX1000 and 25 amp GMA protective fuse for the VX 1500. Never defeat the
fuse, the fuse is designed to protect the electronics in the event of severe power
uctuations. Always be sure to replace the fuse with an exact match as the one
being replaced, unless otherwise told to do so by an authorized American Au-
dio® service technician.
28 2731 30 2932
30. Ground On/Off Switch - If hear a hum or any interference, put the Ground
switch in the “On” postion .
31. Channel B TRS Input - Channel one 1/4” female jack. Excepts either a bal-
anced or unbalanced plug. See page 9 for more details.
32. Channel B XLR input - Channel one 3-pin XLR balanced input jack. See
page 9 for more details.
Figure 2
28. Channel 1 Output Jack/5 way Binding Post - Connect to your speaker’s
input jack. Red is positive signal and Black is negative signal.
29. Channel 1 Speakon Output - Optional speaker output connections. Use
pins 1+ and 1- of this 4-pole Speakon connector to connect to your speaker’s
Speakon input jack.
©American Audio® - www.americanaudio.com - VX Series™ Power Amplifier User Manual Page 6
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